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J's Performance, Inc. is an automotive performance and repair business located in Dubuque, Iowa. J's Performance, Inc. provides a range of services including installation of lift kits, custom exhaust systems, wheels and tires, diesel repair and performance enhancements, as well as general automotive repair for trucks, cars, and SUVs. J's Performance, Inc. also offers a full line of diesel performance products and additives to boost vehicle performance. With over 15 years of experience, the business emphasizes quality service and professional installation of performance parts. The facility is located at 5205 Pennsylvania, Dubuque, IA.
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Came in and needed some air in my tires, called multiple different shops and they said they wouldn’t do it. Without hesitation these kind folks aired up my tires and wouldn’t even accept a tip from me. I know it’s a small thing but it helped me a ton. Very appreciative of their services, and would highly recommend to anyone and everyone.
wanted my project truck finished said they would and didn’t. wiring job was horrible connections slid out. And on my other truck wanted to figure out issue and paid me 300$ to plug in a wire. Don’t recommend
Heard good reviews so I took my 2023 Audi A4 in for a resonator and muffler delete. The customer service was phenomenal, I was able to speak with a mechanic about exactly what I wanted done beforehand, and the price I was given came out $50 cheaper than the initial estimate I was provided. Not to mention my car sounds even better than I had anticipated. I will be returning in the future with no hesitation🫱🏻🫲🏼
J diagnosed and fixed the electrical shorting in my brand new distributor on my brand new 1937 Ford 5 window coupe.
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